Rounding and channeling machine.



T. CORROW.

ROUNDlNG AND CHANNELING MACHINE.

APPLICATION FILED AUG-20,1917.

1,269,055. Patented June 11, 1918.

"fie l g 3 Q 10 l'rHoMAs coEEow, OF swnmrscorr, MASSACHUSETTS, ASSIGNOR, BY MES-NE ASSIGN- A CORPORATION 01? NEW JERSEY.

MENTS, TUUNITED SI-IOE MACHINERY co roRAmo oE rarnason; NEW JERSEY,

E UNEING AND GHAEEELI'N'G MlicHm To all whom it may concern:

Beit known that I, THoMAs CoRRow,. a

citizen of the United States, residing at Swampscott,, in the county of Essex and State of Massachusetts, have invented cer- .tain new and useful Improvements in Rounding and Channeling Machines; and I do hereby declare the following to be a full,

clear, and exact description of the invention,

suchiaswillenable others skilled in the art 5 ill) to the shoe.

The invention is intendedprimarily a s an .improvementin the rounding and channeling machine shown and descrlbed in Patent No. 1,080,606, June 25, 1912, although it may be embodied with advantage in other rounding machines. Machines of thistype are provided withv feeding devices which act on theprojecting'edge of the shoe sole, and

with guides which engage the crease orengage the upper close to the crease and position the shoe with relation to the chopping knifewhich trims its edge. vThe operator holds the shoe and directs it to'the guides -.duringthe'feed, andhe usually gives the shoe a slight lead in order that it may be maintained snugly against the guides during the feed. The edge of the chopping knife is parallel to the line of action of the feeding devices however, andtherefore at an angle tothe line of movement of the sole edgc when theshoe is given alead, and this angle increases with an increase in the lead; .An objectionable serrated edge'will therefore be formed when the shoe is given a material lead to insure its constant engagement with th'e'guides. v I

It is one of the objects of the present invention toavoid' this objectionable feature of the prior constructions, and to this end one feature of the invention contemplates so mounting the chopping. knife that its edge is inclined to the lineof action of the feeding devices. The edge may thus be so argiven a lead corresponding to the angle of Application filed August 20, 1917. senainoi eai c In the drawings, Figur Specification of Letters Patent.- I Padgen'tedJunell,

tllelknife', thus permitting he an. edge to be trimmed inf a more satisfactory manner and with less skill and care on the part of the operator. The amount "of lead habitually given to the shoe will vary with different operators, and a further feature of the invention contemplates the provision of mea1 1s.forvarying the'angle of the knife edgein accordance with the lead which it is desired to give the shoe. .The, various features of the nvention will, beamderstood from an lnspection of the accompanying drawings and the following detailedjdescription of the mechanism illustrated therein. j

e 1 is a front elevatlonslioxvliig so muchof a round ng and channeling machine as is necessary to.illustrate the 1 application of the. present inven- ,tion thereto; Fig. 2 is a detail, plan view, partlyin section, on line 20f Fig. 3,.showing; the carrying slide, on which thechopping knife lSfflllOHllliQd detached from the machine; 3 .is a front end'viewof the knife carrier slide and knife securing devices; and

Fig. 4 is a sectional view-on line 45, Fig. 2. 4 In the CllTiLWlIlgS the mvention 1s illus- .trated as embodied in the machine shown and described in the patent above referred to. This machine is provided with a-crease guide 2, for guiding the shoe when operating through .the shanlnwith a forepart guided movable vertically into and out of engagement with the shoe for guiding the shoe during the. operation about the forepart, with a 1-motion-feeding jaw 6, and with an oscillating sole support 8 carrying the I channeling knife 10. The machine is also provided with a reciprocating slidel2 which carries the edgetrimming chopping knife, 14. The

knife issecured on the lower side of the slide by two clamping plates 16 and. 1 8 arranged .toengage the opposite beveled edges of the knife. Theplate 16 carriesatits forward end the scoringknife 20,..and is secured in position byv a bolt 22 passing. through a slot in the plate and engaging the lug 2 1 which projects from the lower side of the carrier slide.v The clamping plate 18 which engages the opposite edge ofthe knife. is provided with a groove 26 within which the beveled edge of theknife fits, and is mounted for vertical adjustment on a guideway 28 formed on the side of the lug 24;. The plate be increased without impairing 18 is held in adjusted position by a screw 30 passing through a slot 39. in the plate and engaging the lug 2 L. Awasher 3% is interposed between the head of the bolt and the face of the clamping plate.

By adjusting the clamping plate 18 verti- 'cally, one side edge of the knife may be raised or lowered with relation to the opposite side edge to vary the inclination of its front or cutting edge 36. The knife may be thus secured in position on the knife carrier slide with its cutting edge at an inclination to the line of action of the feed jaw and in such position that it will be parallel to the travel of the sole edge when the shoe is given a lead which will insure its proper travel against the guides during the operation about the shoe. This manner of securing the knife to the carrier slide also enables the angle of the knife edge to be readily varied in accordance with the lead which any particular operator habitually gives the shoe in directing it to the guide. The arrangement of the knife edge at an inclination to the direction of action of the feeding devices corresponding to the lead given to the shoe by the operator results in the formation of a comparatively smooth and uniform edge, and permits the lead to the quality Less care and skill is therefore required to properly guide the shoe than with the prior constructions in which the knife edge is parallel to the line of action of the feeding devices, and in which any substantial lead of the shoe results in an uneven and defective sole edge.

lVhile the invention is intended primarily as an improvement in rounding and channeling machines, and has been shown and described as embodied in such a machine, it will be understood that it is not confined in its application to such machines, but may if found desirable be embodied in other shoe machines.

WVhile it is preferred to employ the specific construction and arrangement of parts, particularly in embodying the invention in the machine of the patent above referred to, it will be understood that this construction and arrangement is not essential to the broader features of the invention, but may be varied or modified as found desirable or best suited to the construction of the maof the work.

chine in which it is to be embodied.

Having explained the nature and object of the invention, and specifically described one form of mechanism in which it may be embodied, what is claimed is 1. A sole rounding machine, having, in combination, shoe feeding and guiding Copies of Leashes means, and a chopping knife for trimming the edge of the sole having its cutting edge inclined in the direction of pensate for the lead given operator.

2. A sole rounding machine, having, in combination, feeding devices, guides against which the operator leads the shoe during the feed, and a chopping knife having its cutting edge at an angle to the line of action of the feeding devices.

3. A sole rounding machine, having, in combination, shoe feeding and guiding means, a knife carrier, and means for securing a chopping knife in the carrier having provision for varying the angle of its cutting edge with relation to the line of action of the feeding means.

4. A sole rounding machine, having, in combination, feeding devices, guides against which the operator leads the shoe during the feed, a chopping knife, and means for varying the angle of its cutting edge in accordance with the lead to be given to the shoe.

5. A sole rounding machine, having, in combination, feeding devices, guides against which the operator leads the shoe during the feed, a reciprocating knife carrier, and means for securing a knife in the carrier and for varying the inclination of its cutting edge to the line of action of the feeding devices.

6. A sole rounding machine, having, in combination, guides for the shoe, a reciprocating feed jaw, a reciprocating knife carrier,and clamps on the carrier for engaging the side edges of the chopping knife, one of which is adjustable to vary the angleof the knife edge.

7 A shoe machine, having, in combination, feeding and guiding means, and a chopping knife having its cutting edge inclined in the direction of feed to compensate for the lead given to the work in directing it to the guiding and feeding means.

8. A shoe machine, having, in combination, feeding and guiding means, a knife carrier, and means for securing a chopping knife in the carrier having provision for varying the angle of its cutting edge with relation to the line of action of the feeding means.

9. A shoe machine, having, in combination, feeding devices, guides against which the operator leads the work during the feed, a reciprocating knife carrier, and means for securing a knife in the carrier and for varying the inclination of its cutting edge to the line of action of the feeding devices.

THOMAS CORROW.

the shoe by the 5 each, by addressing the Commissioner of Patents,

Washington, h. c."

the feed to com 

